{{Short description|Variety of corundum}} {{about|the real mineral|mythological and fictional substances of a similar name|Adamant|the type of mineral lustre|Adamantine lustre}} {{Infobox mineral||formula={{chem2|Al2O3}}|color=Brown|mohs=9|luster=Silky}} '''Adamantine spar''' is a silky brown variety of corundum. It has a hardness of 9 on the Mohs scale.<ref>{{cite web |url=http://www.mindat.org/min-5135.html |title=Adamantine Spar |accessdate=September 15, 2007 | archiveurl= https://web.archive.org/web/20071018072823/http://www.mindat.org/min-5135.html| archivedate= 18 October 2007 | url-status= live}}</ref>
==See also== *Yogo sapphire
==References== {{reflist}}
Category:Aluminium minerals
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